Product Description:

The PMB31D-10114-00 is a brushless servomotor manufactured by Pacific Scientific for the PMB Brushless Servomotors series. It is intended for use with matched drives in packaging lines, assembly cells, and small positioning stages where accurate torque and speed control are required. By converting three-phase electrical power into rotary motion, the motor lets the control system follow commanded motion profiles without the brush wear associated with traditional DC motor designs. This configuration also suits axes that need smooth acceleration, deceleration, and frequent starts and stops during automated cycles.

Its frame is listed as NEMA Size 34, which matches mounting patterns commonly used on 86 mm square motors. At a nominal stall current of 5.4 ARMS on 240 VAC, the motor can hold position against static loads while staying within the range used by typical servo amplifiers. Rotor feedback comes from an optical encoder with 2048 ppr, supporting repeatable homing and stable speed regulation. The digital encoder with commutation supplies position and commutation signals to the drive without separate Hall sensors. That combination helps the controller maintain smooth low-speed operation and accurate reversal during indexing moves. A round output shaft provides a uniform surface for couplings or pulleys where keyed or splined interfaces are not required.

Power and feedback leave the stator through flying leads with AMP connectors, which allows direct connection to cabinet harnesses and keeps the rear profile of the motor compact. This arrangement can also simplify cable routing where space behind the motor is limited. The build is identified as a standard motor, so the electrical constants and torque curves follow the baseline values for this model rather than a custom winding. A stack length multiple of 1 indicates the shortest lamination stack, which keeps the overall motor length compact and supports moderate continuous torque for its frame size. The motor shares the general PMB mounting envelope with longer versions in the same line, so higher-torque variants can fit similar machine layouts.